General Deshamanya Don Sepala Attygalle, LVO, ADC, idc, psc, SLAC (1922 — January 2001) was a Sri Lankan militaryleader, a civil servant and a diplomat. He became the longest-serving Commander of the Sri Lankan Army (1967–1977). He went on to serve as the Permanent secretary to the Ministry of Defense and Sri Lankan High Commissioner to the United Kingdom.